idler belt pulley张紧轮皮带轮
idler belt pulley assembly张紧轮皮带轮总成
air compressor idler belt pulley空压机中间传动带轮
belt idler pulley皮带拉紧滚筒
idler pulley bracket张紧用皮带轮托架
Compensating idler pulley导轮补偿
idler pulley shaft惰轮轴
belt tension idler pulley紧带惰轮
conveyor idler pulley输送机拉紧滚筒
N（名词） a freely rotating trolley used to control the tension or direction of a belt 惰轮 (Also called idler)